Calvin and Taylor: The split gets nasty!

An epic feud has erupted between Taylor Swift and her ex Calvin Harris over his hit duet with Rhianna, This Is What You Came For.

Taking to Twitter over multiple posts, Calvin hit back at his ex after reports surfaced that it was Taylor who penned the track under the pseudonym Nils Sjoberg.

Admitting that yes, Taylor did write the lyrics, Calvin was quick to point out that he ‘wrote the music, produced the song, arranged it and cut the vocals’.

Then, things got personal….

Calvin went on to accuse Taylor and her team of trying to make him look bad, before suggesting she should ‘focus on [your new relationship]’ with Tom Hiddleston ‘instead of trying to tear your ex bf down’.

The knockout Tweet from Calvin then alluded to the fact that burning someone in the media is not new for the singer: ‘I know you’re off tour and you need someone new to try and bury like Katy [Perry] ETC but I’m not that guy, sorry. I won’t allow it.’

Now TMZ are reporting that it was the song that ultimately ended the couple’s 15-month relationship, claiming that it was the day Calvin told Ryan Seacrest that he and Taylor had ‘never spoken about’ a collaboration that the romance went sour.